Search found 16 matches

by Peter Tourin
Tue May 16, 2006 3:39 am
Forum: Electrical & Gauges Shop
Topic: '74 GT - American headlight vs. "something else"
Replies: 1
Views: 1813

'74 GT - American headlight vs. "something else"

My bike came with a flat non sealed beam headlight marked "Aprilia". I just bought one of the headlights on eBay from the Netherlands, which Giovanni says are American headlights. It came with a sealed beam light. Did American bikes come with both types of headlight, or is my original one European? ...
by Peter Tourin
Fri May 05, 2006 6:41 pm
Forum: Body, Paint & Rubber Shop
Topic: Re-covering 750GT seat - how to do the front & back
Replies: 0
Views: 1633

Re-covering 750GT seat - how to do the front & back

I've just recovered my seat. When I took off the old cover, the front end was secured to the seatframe by 3 barbs in the seat frame - I assume I'll do that again. But the back was held down by a lot of silicone sealant - which did a good job of rusting the metal. How were they done originally, and w...
by Peter Tourin
Fri May 05, 2006 6:36 pm
Forum: Chassis & Suspension Shop
Topic: How to seat lower headset bearing inner race?
Replies: 3
Views: 2362

Yep - I realized that regular black pipe from the plumbers supply is about 1" ID and just fits. I just stuck a piece in the lathe and trued one end. The outer races look simple - I assume that if I stick them in the freezer and heat the frame gently I can tap them into place pretty easily. Any trick...
by Peter Tourin
Fri May 05, 2006 4:50 am
Forum: Chassis & Suspension Shop
Topic: How to seat lower headset bearing inner race?
Replies: 3
Views: 2362

How to seat lower headset bearing inner race?

When you replace the lower headset bearing, how do you seat it? Do you fabricate a tool that's a pipe with the proper ID to drive the bearing evenly?

Thanks - Peter Tourin
by Peter Tourin
Wed Mar 29, 2006 6:32 pm
Forum: Chassis & Suspension Shop
Topic: Source for 750GT headset bearings
Replies: 4
Views: 3558

Thanks - I emailed Atmus to see if they have them in stock. My local shop couldn't even ID the number - told me it was bad. We'll see if Boston can do better....

Thanks again - Peter
by Peter Tourin
Wed Mar 29, 2006 6:22 pm
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: Twin plug mod for 750GT
Replies: 8
Views: 4063

That's more or less the way I see it -- I can't imagine that it'll do anything that I'll notice -- as long as it doesn't make things WORSE <bg>....
by Peter Tourin
Tue Mar 28, 2006 5:31 pm
Forum: Roundcase Engines > 750 GT, 750 Sport & 750 Super Sport
Topic: Twin plug mod for 750GT
Replies: 8
Views: 4063

Twin plug mod for 750GT

I'm rebuilding a 750GT that I picked up in December. It's got a 2nd plug in each head, on the opposite side from the original plug. The man who sold me the bike wasn't the one who had the 2nd plug installed, and couldn't tell me anything about it. Can anyone tell me anything about twin plug conversi...
by Peter Tourin
Tue Mar 28, 2006 5:23 pm
Forum: Chassis & Suspension Shop
Topic: Source for 750GT headset bearings
Replies: 4
Views: 3558

Source for 750GT headset bearings

I'm not having much luck locating headset bearings. I took the number from this forum - SKF-639174 - to our local bearings supply house and they say it's a bad number. I did an internet search and found another number - SKF-235321 - and my supplier says that this is also a bad number. Can anybody gi...
by Peter Tourin
Thu Mar 02, 2006 4:55 am
Forum: Wheel, Brake & Tyre Shop
Topic: 15 mm Brembo master cylinder - rebuild question
Replies: 3
Views: 3121

If it's a press fit, does the washer that comes with the kit go under the rubber and metal rings, as in the parts manual? When I disassembled, I didn't have one, so I want to make sure before I reassemble.

Thanks - Peter
by Peter Tourin
Wed Mar 01, 2006 8:10 pm
Forum: Wheel, Brake & Tyre Shop
Topic: 15 mm Brembo master cylinder - rebuild question
Replies: 3
Views: 3121

15 mm Brembo master cylinder - rebuild question

I've got an assembly question about the 15 mm front brake master cylinder rebuild kit. On the piston end nearest the lever, there's a washer and a rubber ring surrounded by a metal ring. They're supposed to stay down in the bore, but as the piston moves, they ride out towards the brake lever and fin...
by Peter Tourin
Sun Feb 19, 2006 8:55 pm
Forum: Wheel, Brake & Tyre Shop
Topic: Suggestions for freeing frozen Brembo pistons
Replies: 10
Views: 8321

I'll check my gun and see if it likes vintage Italian brakes....
by Peter Tourin
Sun Feb 19, 2006 10:45 am
Forum: Wheel, Brake & Tyre Shop
Topic: Suggestions for freeing frozen Brembo pistons
Replies: 10
Views: 8321

Thanks, good to know. I'll start pounding the caliper I didn't heat first, and see how it goes. - Pete
by Peter Tourin
Sun Feb 19, 2006 5:32 am
Forum: Wheel, Brake & Tyre Shop
Topic: Suggestions for freeing frozen Brembo pistons
Replies: 10
Views: 8321

> Hopefully you didn;t melt the rubber and kill your caliper.............. < Well, tell me I haven't trashed anything yet.... The only rubber I see is an o-ring between the caliper halves and the seal on each side around the piston. The seals are very old and dirty, and I pulled them before doing an...
by Peter Tourin
Sat Feb 18, 2006 5:16 pm
Forum: Wheel, Brake & Tyre Shop
Topic: Suggestions for freeing frozen Brembo pistons
Replies: 10
Views: 8321

Suggestions for freeing frozen Brembo pistons

Can anyone give me some helpful hints for freeing up frozen calipers? I soaked my 2 calipers with PB Blaster for a week, clamped a rubber hose to the brake line and hit them with 120 PSI -- no luck. I heated the outside of one caliper with a torch to see if I could heat shock the piston loose -- aga...
by Peter Tourin
Sun Jan 01, 2006 4:21 pm
Forum: Chassis & Suspension Shop
Topic: Dual disk Brembos on '74 750GT
Replies: 2
Views: 2025

Hi Steve - I'll keep the dual disks - I also agree they look cool. I'm just starting to look the bike over - picked it up just a few days ago. It's suffered a lot of neglect and will take lots of cleanup. Is there any table of bike production info? VIN is DM750S755587, and I'd like to find out whate...

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